-
Kunihiro SHIMA, Takeshi MIHARA, Keiji UMETANI, Takashi MIKUMO
1980 Volume 29 Issue 8 Pages
363-367
Published: August 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
Observation of γ-ray background has been done by using a Ge (Li)
semiconductor detector when it was placed inside the lead shielding material. With the aid of a very simple model calculation, the concentration of 210Pb
radioisotope embedded in the lead material has been estimated to be 0.1-0.4 (Bq/Pb-
g) (3-12 (pCi/Pb-g) ) .The origin of Pb-
KX-ray emission, the highest peak in the background spectrum, has been investigated by comparing the 210Pb-
47 keV 7-ray and Pb-
KX-ray peak counts. As the result, about 50±30% of Pb-
KX-ray production is estimated to be due to the Pb-
K shell photoionization which is induced by the bremsstrahlung of 210Bi β-ray.
View full abstract
-
Masaki SHINOGI, Kayoko FUKUDA, Miyuki NAKAZAWA, Itsuhiko MORI
1980 Volume 29 Issue 8 Pages
368-372
Published: August 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
A radiochemical group separation using APDC extraction was applied to the neutron activation analysis of normal and cadmium injected rat liver. In order to optimize determinations of induced radionuclides with various half lives, the gamma-ray spectra were obtained after various decay times. Eight elements, Cd, Co, Cu, Fe, Mn, Mo, Se
and Zn,
were determined from rat liver samples within 12 day after irradiation. Although Cd, Cu
and Mo
in normal rat liver could not be detected by nondestructive method, they could be determined after the extraction.The tendency was seen that the concentration of all the elements as mentioned above are increased by cadmium injection. In particular, zinc and copper exhibited high values.
View full abstract
-
Tadatoshi YAMAMOTO, Shinichi TAKEBE, Yoshiki WADACHI
1980 Volume 29 Issue 8 Pages
373-376
Published: August 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
The adsorption behavior of radionuclides (
137Cs
and 85Sr)
on sand and the influence of pH on the distribution coefficient have been studied. The adsorption obeys the Henry adsorption isotherm, which is an approximation of Freundlich adsorption isotherm, in the concentration range of 10
-9-10
-12 mol/l for both 137Cs
and 85Sr.
Their distribution coefficients do not depend on the concentration of radionuclides provided that sand particle size, pH, concentration of coexisting cations and so on are fixed.
View full abstract
-
Akira YOSHITAKE, Kazuo KAWAHARA, Akio IZAWA, Fumiaki SHONO
1980 Volume 29 Issue 8 Pages
377-381
Published: August 15, 1980
Released on J-STAGE: September 07, 2010
JOURNAL
FREE ACCESS
Absorption, distribution, excretion, and metabolism of 5, 8-dihydro-5-methoxy-8-oxo-2H-1, 3-dioxolo [4, 5-g] quinoline-7-carboxylic acid (miloxacin), a new antimicrobial agent, were studied in female rats by using 14C-
miloxacin which was administered orally to the animals in a dose of 50 mg/kg.14C-
Miloxacin was absorbed rather fast and the radioactivity of 14C
distributed widely in a variety of tissues. Peak concentrations of 14C
in serum and tissues occurred 1 to 2 hr after dosing, and were approximately 60 μg equivalent of miloxacin per ml or g in serum, liver and kidney. Excretion of 14C
in urine and feces was fast, and recoveries of 14C
during 48 hr period were approximately 30% in urine and 60% in feces.Concentrations of intact 14C-
miloxacin were higher in serum and kidney while lower in liver. Major metabolites in excreta were the demethoxy derivative (M-1) and the glucuronide of miloxacin; and as minor metabolites five other metabolites were identified.As sex differences, the following facts were observed; concentrations of 14C
in serum and tissues were generally 1.2 to 1.6 times higher in female rats than those in male rats, and the capacity to metabolize miloxacin, especially in the glucuronic acid conjugation, was rather lower in female rats than that in male rats.
View full abstract
-
Asao SHIMOJI, Rikiyo IMAMURA, Fusako YOSHIMURA, Akira ISHIHARA, Toshih ...
1980 Volume 29 Issue 8 Pages
382-385
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Shigeru KOSUDA, Fumio KINOSHITA, Ryoji KAWAKAMI, Masayoshi SHIBATA
1980 Volume 29 Issue 8 Pages
386-388
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Fumio KINOSHITA, Katsushi NAKASHIKIRYO, Haruo YOKOYAMA, Hiromi KUMAI
1980 Volume 29 Issue 8 Pages
389-391
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Yaeko TAKAGI, Fumio KINOSHITA, Akira MAEKAWA, Ryuji OKADA
1980 Volume 29 Issue 8 Pages
392-394
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Isao KANAMORI, Satoshi NAKANO, Chizuko HIGUCHI, Yukiko KUNIEDA, Hatsuo ...
1980 Volume 29 Issue 8 Pages
395-397
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Tomio YOSHINO, Noriaki WATANABE, Yoshihide KAWAHARA, Kyoko OKADA, Ikuy ...
1980 Volume 29 Issue 8 Pages
398-400
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Shin-ichi OHNO
1980 Volume 29 Issue 8 Pages
401-408
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
Tatsuji HAMADA
1980 Volume 29 Issue 8 Pages
409-415
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS
-
1980 Volume 29 Issue 8 Pages
A2049-A104
Published: August 15, 1980
Released on J-STAGE: July 21, 2010
JOURNAL
FREE ACCESS